Since 1959, Radiant has been designing and manufacturing the main components of all its products in central Italy. The technological advancements aimed at greater energy efficiency and reliability are 100% ensured by the made-in-Radiant wall-mounted boiler.

The ONE-TECH® condensing heat exchanger, manufactured by Radiant, features wide-section coils made from a single INOX Ø 28 mm tube, thus ensuring:

• Higher thermal efficiency
• Lower thermal load losses
• Ease of maintenance work

With over 60 years of experience, Radiant has the necessary expertise to design and manufacture the heat exchanger that equips the R 1K series condensing boilers.

DIGITECH® SYSTEM: Displays the temperatures and functions of the boiler in the most user-friendly and readable way with large letters and icons. Allows for precise adjustment of the desired temperature by degree for economy.

Control capabilities:

• External sensors
• Solar panels
• Sensors for external boiler
• Autonomy valves
• Numerous additional accessories

The components of the wall-mounted boiler are arranged so that they are all easily accessible for inspection and repair. For example:

• The closed expansion tank is on the side with the valve in front for easy maintenance.
• The hydraulic connection of the closed expansion tank is at the top for easy replacement.
• The transformer is not part of the control board, facilitating its replacement.
• All components are connected with brass fittings for easy repair.
• The special sound-absorbing cone helps reduce noise.
• All components are made from high-quality branded materials, e.g., Callefi.

NON-RETURN VALVE: "Clapet" for easy connection to central exhaust systems, according to UNI 7129 Standard. No additional equipment/cost is required for the connection.

TOTAL FLUE GAS BARRIER: After the boiler operation ends, the acquired temperature is trapped in the heat exchanger space and is not released into the environment.

INVERTER PUMP with PWM: The pump increases or decreases the speed/flow of water in the circuit depending on the setting.

Specifications:

• Nominal thermal power (Max) kW: 24
• Nominal thermal power (Min) kW: 2.9
• Capacity of closed expansion tank (C.E.T) L: 8
• Dimensions Height x Width x Depth mm: 787 x 420 x 370
• Degree of electrical protection IP: X5D